Mating songs of male tree crickets.

crickets

Format

This data frame contains:

species:

Species, (exis, nius), see details

temp:

temperature

pps:

pulse per second

Details

Walker (1962) studied the mating songs of male tree crickets. Each wingstroke by a cricket produces a pulse of song, and females may use the number of pulses per second to identify males of the correct species. Walker (1962) wanted to know whether the chirps of the crickets Oecanthus exclamationis (abbreviated exis) and Oecanthus niveus (abbreviated nius) had different pulse rates. See the biostathandbook for details. (The abbreviations are made from the the first two and last two letters of the species.) Walker measured the pulse rate of the crickets (variable pps) at a variety of temperatures (temp):

Examples

  
data(crickets)
coplot(pps ~ temp | species, data=crickets)